You can configure the internal domain list to allow Deep Discovery Email
Inspector to determine whether a message is
incoming or outgoing.
If the domain of a sender address is in the internal domain
list, Deep Discovery Email
Inspector considers messages from
the sender as outgoing messages. Deep Discovery Email
Inspector
applies policies based on the message direction.
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NoteIf you do not add any entries in the internal domain list, Deep Discovery Email
Inspector considers all messages as incoming
messages by default.
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